EP 0499422 A2 19920819 - Page transfer in a data sharing environment with record locking.
Title (en)
Page transfer in a data sharing environment with record locking.
Title (de)
Übertragung einer Seite in einem Datensystem mit gemeinschaftlichem Zugang mit Verriegelung der Aufzeichnung.
Title (fr)
Transfert d'une page dans un système de données partagées à verrouillage d'enregistrements.
Publication
Application
Priority
US 65656791 A 19910215
Abstract (en)
A fast technique for transferring units of data between transaction systems in a shared disk environment. The owning system, having updated the page, generates a version number for the page which is stored with a lock possessed by the owning system. When a requesting system seeks a record on the page, its request for a lock illicit an indication that a more recent version of the page is required in the local memory. The buffer management component of a DBMS, with assistance from the lock management, triggers a memory to memory transfer of the page from the owning DBMS to the requesting DBMS using a low overhead communication protocol. The transfer of page is without disk I/O or the log I/O for the updates made to the page.
IPC 1-7
IPC 8 full level
G06F 9/46 (2006.01); G06F 12/00 (2006.01); G06F 12/08 (2006.01); G06F 17/30 (2006.01)
CPC (source: EP US)
G06F 12/0815 (2013.01 - EP US); G06F 16/1774 (2018.12 - EP US); Y10S 707/922 (2013.01 - US); Y10S 707/99938 (2013.01 - US); Y10S 707/99939 (2013.01 - US); Y10S 707/99953 (2013.01 - US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0499422 A2 19920819; EP 0499422 A3 19930714; JP H04310148 A 19921102; JP H0827755 B2 19960321; US 5327556 A 19940705
DOCDB simple family (application)
EP 92301075 A 19920210; JP 3126492 A 19920123; US 5973493 A 19930511